TW587927B - Connecting element - Google Patents

Abstract

A connecting element for connecting two rods (6, 9) or screws used for bone or vertebra stabilisation is provided. The connecting element comprises a connecting portion (10), a first portion which can be connected to one of the rods and a second portion which can be connected to the other rod. In order that not only rods parallel to each other, but also those inclined at an angle to each other or oblique can be fixed to each other, the first portion (12) is connected to the connecting portion (10) by a device (20) allowing polyaxial orientation.

Description

587927 V. Description of the invention (1) The invention relates to the two rod-shaped, Yuan-haiku connection elements used to connect bones or spine stabilization before applying for the first scope of the patent application. Such connection elements have been described in DE 6 92. 0 6 3 1 8 τ ° 2. It is formed by two rods that are connected to each other at one end, and the connection-reverse connection element is a common screw element that can be calculated to extend around the direction across the rod. The end of the connection portion includes a ring and can be sleeved on the screw. $ Knot clamp. Even on the pole. It is known from WO 91/16020 that two persons including two persons can be connected to the connecting portion to receive two rods parallel to each other. Because of this circle, the 1 ^ -segment-shaped grooves connected obliquely to each other cannot be connected. The purpose of the present invention is to provide the above-mentioned rods / connecting members which are inclined at an angle or extend obliquely to each other, allowing each other to connect with each other. The purpose is to connect using the scope of the patent application. Reached. The great advantage of this type of connector is that the required orientation of the connecting elements of the feature sentence orients the rod. K can be exempted according to the development characteristics of the present invention are listed in the further features and advantages of the present invention, and the auxiliary items. Understandable. In the drawings: * The specific example is explained by referring to the drawings, that is, FIG. 1 is an application perspective view; FIG. 2 is a connection element first; FIG. 3 is a connection element; second specific: The figure is a sectional view of a modified specific example θ , Fix the three screws on the middle table of the crotch diagram. The screws each include a nail head 5, and a right side; ^ is called a foot screw in a spinal surgery and has a valley hole to accommodate the rod 6. Use nut 7

$ 5page It can be seen from the first figure that screwing the second screw in the skeletal part 1 is indeed similar. Here, the nail head container 9 is connected to the first rod 6 by using the connecting element 10. As a result, the fifth aspect of the invention is described. The rod is firmly connected to the nail head three screw needle 8. The design spot, the second rod 9 0 /, and the second month are extra stable. As shown in the above example, the connected two parts 1 and 2 It is long bones. In the same way, the fine Du Xi plant rod with corresponding screws is used to receive the joint assembly at spinal surgery, such as the affection of the fixture, see DE 38 23? 37 —c. Door-like No. 2-Figure 2 and Figure 2-Specific: In the connecting element 10 includes nail stems 11 'at 16 in a circle U two arms 15, 16' delimiting a U-shaped groove ". The two arms 邝, the diameter is basically free The end has a male thread 17. The U-shaped groove is straight 1 8 into the TT guide, or slightly larger than the diameter of the rod to be accommodated, and large enough to be buckled; ί: Λ14, guided by the latter in the lateral direction In addition, a nut 19 is provided. The rod 18 in the groove 14 can be screwed on the nut of the nut 19. The diameter of the 18 is small, so it is placed in a U-shaped recess. Ϊ 2 Figure 12 can be seen in the 'rod The other end of J8 includes the nail head 21 'which has a spherical shape larger than the nail head 2 and the epicondyloid joint 20, and its diameter is basically equal to or called the latter's guide bow I. "The size allows the nail head to be introduced into the cavity. Specifically, your Φ diameter is equal to the radius of the nail head 21. The holes 22 = the bottom 23 are spherical, and they are separated from the cylindrical nail head by screwing. Figures 2 and 3 show that the nail stem is designed to be favorable.

Page 6 587927

5. Description of the invention (3) In a specific example, the connecting element 10 is designed to be separable from the first and second. In the specific examples in Figures 2 and 3, the positions marked 2 and 4 are separated on the nail stem 丨 or u. For this purpose, one nail stem includes a screw hole and the other nail stem includes a screw member that can be screwed into the screw hole. This connection is briefly indicated by connection points 2 · 4. The screw hole can also be set straight on the nail head 21, and the nail stem 丨 1 has a corresponding shape of the screw head facing the nail head, which can dance with the screw hole and screw the two parts together. In the specific example shown in Fig. 2, the nail stem must be rotated from the nail head 2 so that the nail head 21 can be introduced into the cavity hole from the free end of the cavity hole 22, and the nail stem 11 is screwed on at the position shown in the figure , The iconic connection is reached. As further shown in Figure 2, adjacent to the bottom 23

Expansion into a funnel shape, so the nail dry 丨 丨 Com-Λ 疋 Serving ^ 〇 move. The side of the J-rod HJ is pivoted relative to the sleeve 20 at the nail head 21 after the introduction of the nail head 21. The side of the nail head is spherical, ^ 2 1 side, the rod 28 to be accommodated by the pressure element is straight: it can be seen that one is further from 〇 Defining the groove 31 < When the cylindrical male screw 32 and the male screw 32 act upon each other ', a pressure element 26 is inserted into the cavity 22 or the cavity 22 to face a radius corresponding to the nail head 21. At a distance away from the nail, the cylindrical surface 27 is framed, and the diameter of the cylinder here is so that the rod 2 8 can be placed in the recess 2 7. From the 2nd U-shaped groove 3 丨 is coaxial with the cavity hole 2 2 so that-like the second part 13, extends at the other end of the adjacent 1 to 2 section 20 to, with the circle pair ', Γ 8's Straight fork. A nut 33 is also provided, and a preliminary connection portion thereof is formed inside the U-shaped groove 14. ^ Insert the rod 18 into the uniaxial direction.

587927

5. Description of the invention (4) Fixed. Next, guide the sleeve 20 and incorporate the second rod 28. After the middle rod 2 is inserted, lock the nut 33 ·. The nut not only fixes the rod 28, but also presses the nail head 21 through the rod 28 and the pressure element 26, and fixes the nail head 21 in its axial position in the specific example shown in FIG. 3. The sleeve 20 and the pressure element 26 , Nail head 2,1, rod 2 8, nut 3 3, all details are the same as the first part 12 in the second figure. The design of the first part is not uniaxial, but multi-axial connection. This first section 12 is inversely symmetric with the first section 12. All components of the joint, nail head, pressure element, rod, nut, etc., are matched with the corresponding components of the first part 12. In combination, as in the above-mentioned specific example, nails u can be removed by screwing along the line 24. After the nail head 21 is inserted, the two parts of the nail stem 1 Γ are firmly connected to each other.

… During operation, connect according to the first part 丨 2 mentioned above. Before fixing, each set 20 is oriented towards the rods 18, 28 to be accommodated, then put in the rods and fixed with nuts 19, 3 3. Pressure is applied from the nut through the rod n 2 8 and the pressure element. The best virtue is to fix the nail head in position. ^

Modifications not shown in the figure are specifically connected to the free end and another female thread to lock the screw connection in a known manner. In the above specific example, any f is inserted from the end. Modified specifically ^ lang. The nail head is further away from the cavity hole 22 and the collar remains in the cavity hole. Weight = free edge, multiple axial movements between outwardly tapered cones. In the example, 'the socket 20 or the second part is adjacent, the internal screw can be screwed in, so that according to the technical situation, the nail head 21 is from the u-shaped recess. In the example, the cavity hole 2 2 can extend through the end of all arms Insert the 'lock point to fit' is to surround the nail head towards the nail stem 丨 丨 Large 'to allow the sleeve and nail head or nail

Page 8 587927 V. Description of the invention (5)-The specific example shown in Figure 4 is the nail dry u, the nail head, the rod 18 or 28, and the two towels SU i L3, fully matching the specific example shown in Figure 3. . The design of the socket 3 4 is not: = 2 3 4 includes the first end 35 and the opposite second end 36, and is provided with a cavity hole mountain q =: 1 and the axis of symmetry 37 is coaxial. There is also a U-shaped recess 39 extending from the first ^ A 榼 across the line of symmetry 39, and the U-shaped recess is defined by two arms 40, 41. , Adjacent, first end 35, two arms 40, 41 include male thread 42. The diameter of the u-shaped recess 39 is equal to or slightly larger than the diameter of the rod 18 or 28, and is large enough that the rod can be introduced into the recess 22. The side guide bow 1 is used as the 0-shaped recess. As in the specific example described above, the distance between the "·" shaped recess bottom and the U-shaped bottom is smaller than the diameter of the rod to be accommodated. Furthermore, in the above specific example, a nut 33 and a male thread 42 are provided. Cooperation.

Different from the above specific example, the cylindrical section 43 of the coaxial cavity hole extends far to a predetermined distance from the second end 36, and thus extends to the second end 36 in a tapered manner at a taper angle. A pressure element 44 is also provided. The outer surface of the pressure element 44 is tapered toward the second end 36 in the area 45 surrounding the nail head 21 laterally, and the taper angle is equivalent to that of the taper area of the cavity. The tapered region includes an elongated hole 46 directed to the second end 36, opening toward this end. Since the tapered surface between the accommodation cavity 38 and the pressure element 44 is self-locking when fully inserted. In the manner known from EP 0732381 β, the pressure element comprises a first end 47 and an opposite second end 48. A substantially cylindrical section is provided adjacent to the first end, and its outer diameter is selected so that the pressure element can slide into the cylindrical section 43. As can be seen from the figure, the pressure element includes a spherical segment-shaped recess 45 in the second region and is opened toward the second end 48 to accommodate the nail head. In other respects, the sleeve 34 and the pressure element 44 cooperate with the content of the above EP 0732081, and are listed here as a part of the description. The element shown in Figure 4 is constructed in reverse symmetry.

Page 9 587927 V. Description of the invention (6) The nail head, sleeve, and pressure element are all consistent with the above. In operation, the pressure element is inserted into the sleeve 34 from the first section 35. The nail head 21 is inserted or pressed into the area 45 by the second end 36. The rod 28 is located in the remaining U-shaped long hole, and is screwed to the outer nut 3 3 to apply pressure to the rod 28, thereby applying pressure to the pressure element 44 surrounding the nail head 21 in a manner of making the rod 28 and the spherical nail The head 21 is held in place. The procedure is the same as on the opposite side. This method also allows the pin shaft 1 Γ to pivot through the preset dihedral angle and around the symmetrical axis 37, so it can be oriented and adapted to the rod to be connected or the rod with bolts. In addition, the element is also designed as a nail head with a sleeve as shown in Fig. 4, and the other nail head is shaped in a uniaxial manner as shown in Fig. 2. -In the above specific example, the connecting element always explains the connection of the rod. In the same way, the connecting element can also connect two screws of two screws, or one screw of screws and a rod, and fix it.

Page 10 587927 Brief description of the drawings. Figure 1 is a perspective view of the application. Figure 2 is the first specific sectional view of the connecting element. Figure 3 is the second specific sectional view of the connecting element. Figure 4 is a modified example. Sectional view.

Claims (1)

587927 vi Scope of patent application> 1 · A connection original (1 0), with a connection part, ^^ 口 不 ～ 山, each with a part (12, 13, 12, 12) for connecting two rod-shaped ends -and, = connection Buwei 22: 4,8), used for stabilizing the bones or spine, its special ir cattle, the interface P is rod-shaped, and at least one of them = text for, to the element (20, 21, 26, 33) . The raft P is self-contained and multi-axis fixed. 2 As the scope of the patent application No. 1 is 4 ^ _ (13) is uniaxially connected to the Lian 'element, of which the second part is 3 / Item 1 2 ·) are connected so that they can be multi-axis oriented. Connect several pieces, two of which (12, 4 · As in the patent application park., (12) Including the nail head (21), the connecting elements of, where the first axis-oriented element (10), package 2 To the rod-shaped element (28); and a large number of), on the one hand, it can accommodate the rod-shaped element (2 0), and has a receiving hole (3 1, 3 2 and a nut (33) or a screw, and the other side is a nail The head (21) is fixed by the shape piece (28).